Which was a reason for the development of an early civilization in the tigris- euphrates river valley?
a periodic floods left rich soil, which was ideal for farming.
b the location protected the people from land invasion.
c these rivers provided a direct trade route between europe and asia.
d these rivers flowed into the mediterranean sea.

the hebrew bible is the sacred text of judaism;

the koran is that of islam.

among eastern religions, the sacred scriptures of hinduis are the four vedas and the upanishads, among others.

a main characteristic in these books is that un most of them we find certain "norms" of behavior, as is the case of the bible that has it's commandments. these rules are to regulate the behavior of believers and faithful of their respective faith.

these rules tell us what is right and what is not.